PS Engineering PAC24 Installation And Operation Manual
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PS Engineering PAC24 Installation And Operation Manual

Audio control panel and intercom system
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Audio Control Panel and Intercom System
FAA-Approved TSO C50c
JAA-Approved JTSO C50c
In certified aircraft, warranty is not valid unless this product is installed by an
Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed written permission of PS
Engineering, Inc. is strictly prohibited. For further information contact the Publications Manager at PS Engineering, Inc., 9800
Martel Road, Lenoir City, TN 37772. Phone (865) 988-9800, email info@ps-engineering.com.
9800 Martel Road
Lenoir City, TN 37772
www.ps-engineering.com
PAC24
Installation
and
Operation Manual
Document P/N 200-240-0010
Revision 29, September 2021
Authorized PS Engineering dealer.
PS Engineering, Inc. 2021 ©
Copyright Notice

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  • Page 1 Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed written permission of PS Engineering, Inc. is strictly prohibited. For further information contact the Publications Manager at PS Engineering, Inc., 9800 Martel Road, Lenoir City, TN 37772. Phone (865) 988-9800, email info@ps-engineering.com.

  • Page 2: Table Of Contents

    2.4.14 I (P/N 11606 11606R) ............2-12 NTERCOM EXPANSION 2.4.15 CVR O ........................ 2-13 UTPUT 2.5 A ........................2-13 DJUSTMENTS 2.6 C ........... 2-13 OMMUNICATIONS NTENNA NSTALLATION OTES 2.7 T ................2-14 ELECOMMUNICATIONS INTERFACE 2.8 PAC24 P ....................2-15 IN ASSIGNMENTS...
  • Page 3 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 2.9 P ..................2-16 NSTALLATION HECKOUT 2.10 U ...................... 2-16 NSTALLATION 2.10.1 O .................... 2-16 PERATIONAL HECKOUT 2.11 F ......................2-17 INAL NSPECTION SECTION III OPERATION ....................3-1 3.1 SCOPE ..........................
  • Page 4 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual SCOPE ................................1-1 EQUIPMENT DESCRIPTION ........................1-1 APPROVAL BASIS - ............................1-2 SPECIFICATIONS ............................1-2 EQUIPMENT SUPPLIED ..........................1-3 EQUIPMENT REQUIRED BUT NOT SUPPLIED ..................1-4 LICENSE REQUIREMENTS ..........................
  • Page 5 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 3.5.1 (4) ........................... 3-3 PEAKER MPLIFIER “C ” ..............................3-3 3.5.2 LICK ................................ 3-3 PLIT 3.6.1 ..........................3-3 PLIT INGLE PANEL 3.6.2 ..........................3-4 PLIT ANEL 3.6.3...

  • Page 6: Section I General Information

    Standard/NVG (same as -8100), with Vertical Orientation 050-240-8500 Where the functions are identical to all units, it will be referred to herein as a PAC24. Otherwise, the appli- cable units will be specified. NOTE: Observer configuration (-0400) units cannot be mixed with Standard configuration units.

  • Page 7: Approval Basis

    PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual The Duplex Telephone mode (COM 5) allows the PAC24 to act as an audio interface between aircraft headphone and microphones and specific aircraft approved (FAA/FCC) cellular telephone equipment.

  • Page 8: Equipment Supplied

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual Specifications, Continued. POWER REQUIREMENTS (Including Internal Lighting): Voltage: 11 to 33 VDC Maximum Current: 2.5 Amp (Externally protected by a 3 Amp circuit breaker.) Typical operating current:...

  • Page 9: Equipment Required But Not Supplied

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual PAC24 Installation Kit: 250-240-0001 Description Quantity Part Number PAC24 installation rack assembly 475-240-0040 Molex Connector Shell w/key, 50 pin, key 17/18 120-425-5002 Gold Plated Crimp Pins...

  • Page 10: Section Ii - Installation

    Quick Reference Guide, document number 200-240-0310. In a single installation, with no options, no action is required. In dual installations, place the DIP switches into the proper position to configure the PAC24 as the pilot, or copilot panel. By designating a pilot or copilot panel, the aircraft commander, or pilot, will have priority for transmissions and intercom mode selection.
  • Page 11 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual Remove 2 top screws Figure 2-1 Cover Screw Locations DIP Switches Circuit Jumpers Figure 2-2 Locations 200-240-0010 Page 2-2 Rev. 29, Sept. 2021...
  • Page 12 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 2.2.2 Single/Dual configuration jumpers J4 & J5 Single System or Pilot Audio Panel Copilot Audio Panel J4 ON (installed) J4 OFF (Removed) J5 Jumper Pins 1 & 2 J5 Jumper Pins 2 &3...

  • Page 13: Dip Switch Configurations

    Pass 3 / Expansion (P/N 11606) – J3, pin a configuration (S2) 2.2.4.1 As shipped, the PAC24 is 5-place intercom, and the ability to convert the system from a 5-place intercom to use an expansion unit that will allow up to 8 places on the intercom per audio panel.
  • Page 14 14-Volt Backlighting / Swap – J3, pin 18 configuration (S4) 2.2.4.5 The installer has the option of implementing PS Engineering’s patented “Swap” function, which allows the pilot to switch between Com 1 and Com 2 with an external switch. The Swap command is controlled through the unused backlight input, and selected by the internal DIP switch.

  • Page 15: Dip Switch Cross Reference

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 14 V Aircraft 28 V aircraft Pin 18= 14 V input Pin 18=Swap Pin U=Swap Pin U =28 V input 2.2.4.8 Expansion Mode (P/N 11606) / Telephone configuration (S5)
  • Page 16 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual Dual PAC24 - Pilot Panel- 28 Volt Aircraft Dual PAC24- Copilot Panel- 28 Volt Aircraft notes notes J4- On/ J5- Pins 1 & 2 J4- Off J5- Pins 2 & 3...

  • Page 17: 2.3 Equipment Installation Procedures

    2.3.1 Mounting Requirements The PAC24 must be rigidly mounted to the instrument panel of the aircraft structure and within view and reach of the pilot position(s). Installation must comply with FAA Advisory Circular AC 43.13-2A. The unit may be mounted in any area where adequate clearance for the unit and associated wiring bundle exist.

  • Page 18: Cooling Requirements

    There must be at least 13.8 VDC present at the bottom connect- or, pin 25, of the PAC24 for the power supply to work in its designed regulation. Otherwise, it cannot ade- quately attenuate power line noise.

  • Page 19: Existing Kma 24H Installation

    THE CONNECTIONS BETWEEN THE AUDIO PANELS MUST BE LEFT INTACT. This includes Pins V to V (Key Enable), 21 to 24 (Isolate /Isolate 22) and Y to Y (Private). PS Engineering uses these lines for data bus communications between panels.

  • Page 20: Swap" Mode

    2.4.12.1 Push to talk intercom The PAC24 can be used as an IntelliVox® intercom, or, as a keyed intercom. Switching J3 pin W to ground will inhibit the IntelliVox® and the intercom squelch will not open until the ICS PTT switch is ac- tivated.

  • Page 21: Entertainment Input (J3 Pin 7)

    2.4.13.2 Entertainment inhibit The music input to the PAC24 uses the existing Speaker Power input from the KMA24-71. This pin should be removed even if music is not desired. However, if avionics power remains on Pin 7, there is the possibil- ity of power ripple entering the system.

  • Page 22: 2.4.15 Cvr Output

    It is probable that radio interference will occur in the split mode when the frequencies of the two aircraft radios are adjacent, and/or the antennas are physically close together. PS Engineering makes no expressed or implied war- ranties regarding the suitability of the PAC24 in Dual or Split Mode.

  • Page 23: Telecommunications Interface

    PTT is activated. If telephone mode is selected by the internal DIP switch, (S4 Switch 4, see §2.3.2.9) the PAC24 is forced into Com 5- Duplex mode. This mode is designed to operate with telecommunications systems. Intercom Audio streams are provid- ed to the COM 5 output, the PTT for Com 5 is inactive, and audio from Com 5 is presented to the headset.

  • Page 24: Pac24 Pin Assignments

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual PAC24 Pin assignments J3 Connector Alternate Functions Speaker Lo (See Instructions) Aircraft Ground CVR Output Playback PA Speaker Com 1 Mic Aud Com 1 Mic Key...

  • Page 25: Post Installation Checkout

    Unit Installation To install the PAC24, gently slide the unit into the mounting rack until the hold-down screw is engaged. While applying gentle pressure to the face of the unit, tighten the 3/32" hex-head in the center of the unit until it is secure.

  • Page 26: Final Inspection

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 2.11 Final Inspection Verify that the wiring is bundled away from all controls and no part of the installation interferes with air- craft control operation. Move all controls through their full range while examining the installation to see that no mechanical interference exists.

  • Page 27: Section Iii Operation

    Selector Panel/Intercom Systems. Please read it carefully before using the equipment so that you can take full advantage of its capabilities. This section is divided into three sections covering the basic operating areas of the PAC24 systems. They are transceiver selection, audio selector, and intercom.

  • Page 28: Communications Selection (2)

    There are 10 pushbuttons associated with the communications transceivers. The lower buttons control which transceiver is selected for transmit. The PAC24 gives priority to the pilot’s PTT. If the copilot it transmitting, and the pilot presses his PTT, the pilot’s microphone will be heard over the selected com transmitter.

  • Page 29: Observer Transmit Selection (Part Number -0400 Series)

    Key “Click” 3.5.2 The PAC24 is equipped with a “click” function that provides an aural feedback to the user in addition to the tactile button push. This sound can be enabled or disabled by simultaneously holding the COM 1 and COM 2 buttons in for at least 5 seconds.

  • Page 30: Split Mode, Dual Panel

    In a dual panel installation, both pilots have access to any combination of transceivers. Because there is cross communication, each PAC24 knows the other unit’s transmitter selection. The audio panel designated as “Pilot’s” will have transmission priority over the panel designated as copilot’s, when both panels are keyed for transmit on the same radio.

  • Page 31: Volume Control (3)

    3.7.3.1 Single Installation Intercom Modes : (Up Position): The pilot connected to the PAC24 is isolated from the intercom and is connected only to the aircraft radio system. He will hear the selected aircraft radio reception (and sidetone during radio transmissions).

  • Page 32: Entertainment Input

    They may also listen to Entertainment. Because the single panel, non-expansion PAC24 (and KMA 24H) uses the same output for the copilot and passenger, “Crew” mode is not possible (Unless expansion module, p/n 11606 is used) 3.7.3.3...
  • Page 33 PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual In a standard dual installation, the pilot and copilot can select TEL (Com 5) mode independently by press- ing their respective COM5 Xmt button. The passengers are on the phone only when the pilot has selected Com 5 mode and his ICS mode switch is in the ALL position.

  • Page 34: Section Iv- Warranty And Service

    PS Engineering, Inc. The risk of loss or damage to the product is borne by the party making the shipment, unless the purchaser requests a specific method of shipment. In this case, the purchaser assumes the risk of loss.

  • Page 35: Appendix A - Installation Drawing

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual Appendix A – Installation Drawing 6.165 6.298 (OUTSIDE) (INSIDE) OF THE UNIT 6.485 Key between 1 7 and 1 8 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 (INSIDE) 1.248...

  • Page 36: Appendix B Single Unit Interconnect Wiring (Does Not Apply To 050-240-0400, Dual Observer)

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 6 Appendix B Single Unit Interconnect Wiring (does not apply to 050-240-0400, dual observer) 200-240-0010 Appendix C Rev. 29, Sept. 2021...

  • Page 37: Appendix C Dual Interconnect Radio Wiring (All Versions)

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual Appendix C D Interconnect Radio Wiring (all versions) UNSW UNSW Com #1 Com #2 Com #3 Com #4 Com #5 (Note 17) (Note 13) Com 1 Audio Hi...

  • Page 38: Dual Pac24 Crew Audio Wiring, Standard (-0100, -0500, -0503) Units

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual Dual PAC24 Crew Audio Wiring, Standard (-0100, -0500, -0503) Units Pil ot's PAC24 P/N 050-240-0100, -0500, -0503 P/N M UST M atch Copi lot Panel Copi lot's PAC24...

  • Page 39: Dual Pac24Intercom Audio Wiring With Observer Configuration Units (050-240-0400 Only)

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 7.2 Dual PAC24intercom audio wiring with Observer Configuration Units (050-240-0400 ONLY) Pilot I CS key Crew Audio Panel Observer Audio Panel Pilot Mic Audio Hi Observer Mic Audio Hi...

  • Page 40: 7.3 Dual Pac24Intercom Audio Wiring With Observer Configuration (050-240-0400 Only) And Expansion Units

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 7.3 Dual PAC24intercom audio wiring with Observer Configuration (050-240-0400 only) and expansion units CVR Output CVR Output Pilot Mic Audio Hi Observer Mic Audio Hi PAC24 Observer Configuratio Unit...

  • Page 41: Appendix D- Instructions For Faa Form 337 And Continuing Airworthiness

    Aircraft equipment list, weights and balance amended. Compass compensation checked. A copy of the operation in- structions, contained in PS Engineering document 200-240-( ), revision ( ), dated ( ), is placed in the aircraft records. All work accomplished listed on Work Order...

  • Page 42: Appendix E - Rtca Do160D (Eurocae Ed-14) Environmental Qualification Form

    PS Engineering PAC24 Series Audio Selector Panel and Intercom System Installation and Operator’s Manual 9 Appendix E – RTCA DO160D (EUROCAE ED-14) Environmental Qualification Form Audio Selector Panel/Intercom Part Number: 050-240-0XXX FAA TSO Number: C50c, Class A, Manufacturer: PS Engineering Incorporated 9800 Martel Road...

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